Temperature-regulator.



W. B. DAHL.

TEMPERATURE REGULATOR.

ABPLIOATION FILED MAY 26, 1913.

Patented M y 19, 1914.

UNITED STATES PATENT onnrcn WALTER, B. DAHL, or MINNEAPOLIS, MINNESOTA, assrenon, BY MESNE ASSIGZN- MENTS, TO B. P. KIMBALL, or -MI1\TNEAPQLIS, MINNESOTA.

TEMPERATURE-REGULATOR.

To all whom it may concern:

Be it known that I, WALTER B. DAHL, a citizen of the United States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements in Tempera:

wall it i s not only, necessary to secure the regulator in position, butit is also necessary to make the proper connections of the different wires with the two or more circuits inv volved in the temperature regulator. In securing such a temperatureregulator to the wall it frequently happens that the wiring is disarranged and in many casesfalse con-.

nections are made. This is particularly true because the men who attach temperature regulators are usually plumbers and not electricians,

It is the'object of my invention to overcome the aforesaid defects in temperature regulators and difiiculties 1n attaching the same" 'towalls, and to effect this. I provide' aseparate'attaching plate to be secured to thew'a'llof the room where it is desired to' placethey temperature regulator, which plate will be made'of insulating material and 'Will have therein the necessary number of contacts properly wired' in the circuits which are required to be operated by the thermostatof the temperature regulator. These sets of contacts are insulated one from another, and the" casing of the temperature regulator is so constructed that when the easingis secured over the attachingplate, and screwed to the attaching plate, one of said contacts isplaced in circuit with the said casing representing the ground wire while the other contacts are severally brought into circuit with the contact posts for the thermostat, by which through movement of the thermostatic finger oneor 'th'eiother of two opposite circuits, for effecting f operation of the draft regulating. motorrljis closed or opened.

Specification of Letters Patent.

Application filed May 26,

Patented May19,1914. 1913. Seria1No.769,920.

invention will appear in connection with the detaileddescription thereof and are particularly pointed out in the claims.

tion of my invention in'one form, Figure l is a front elevation of a thermostat secured in position upon a wall by means of one of the aforesaid attaching plates, with some parts. broken away. Fig.2 is a sectional view of a portion of a wall having one of said attaching plates secured thereto and a temperature regulator carried by the attaching plate. Fig. .3 is a front view of the attaching plate separate from the wall.

The temperature regulator 10, as above noted, may be such a temperature regulator as that shown in the co-pending application.

the casing12of the temperature regulator, and has thereon a switch plate 13' which extends between contact points 14 and 15 carried ,by posts 16 and 17, said posts being set upon a plate 18 ofinsulating material so that the contact points 14 and 15 are insulated from the casing 12 and the switch plate 13. In the wiring of such' a device heretofore," it has been customary to 'extend wires from-said posts 16 and 17 through the back of the casing 12 to the batteries and securlng provided with an aperture 25 through which extends the end of a cable 26 of well-known construction compris ng three independent 31 and 32 with plates 23, 24 and '20, respectively. Of these wires 29 is the ground, and 27 and 28 are the reverse circuit wires which are placed in circuit with the contact/.p'oints is secured to plate 19, as will hereinafter be pointed out.

In the drawings, illustratingthe. applica which my invenand insulated wires 27, 28 and 29, which wires are connected by means of screws'30,

The full objects and advantages of my A thermostatic lamina 11 is in circuit with motor, the ground wire being carried from t of prop-' to. be insulated'from plate 20.- Block 19 is 14 and .15 when the temperature regulator As above described, block 19 and parts carried thereby, including the plates 20, 23 and 24 and the wires 27, 28 and 29 connected therewith, is manufactured complete and sent out with the temperature regulator, but not attached thereto. This block 19 is secured to a wall 33 by means of wood screws 34, which extend, preferably, through the respective plates 23, 24 and 20 and-'the plastering of the wall into lath This fasteningis done independently of the ternperature regulator and, of course, the operator can easily run the cable 26 through the plastcrii'lg into .the wall spaces back of the same and secure the block 19 in the exact position at which it is desired to fasten the temperature regulator to the wall. A temperature regulator such as I have described is provided with a base having side flanges 36, and the block 19 is made of such width as to just fit within these side flanges. The plate 20 extends across the width of the block so that the upstanding members, or cars, 21 and 22 will contact with a firm, circuit-making pressure with the side flanges 36 when said flanges are slipped over the block 19. Lugs, or stops, 37 on the flanges 36 serve to position the base properly for the final securing thereof to the piece 19. The metal strips 23 and 24 are each provided with a threaded screw-hole 38, and, by means of screws 39 extending through the frame 12 of the temperature regulator and into the plates 23 and 24 and the block 19, the temperature regulator is securely fastencd to the piece 19. As best shown in Fig.

2, metallic sockets 40 are provided for screws 39, said sockets being insulated from the frame wall 12 by means of a lower inset washer 41and an outer washer 42 of insulat- 'ing material. The socket pieces 40 are of metal and have arms 43 extending therefrom. Wires 44 and 45 connect the arms 43- and socket pieces 40 with contact posts 16 and 17, respectively. It will be apparent, therefore, that when the heat regulator is placed over the screw piece 19 with the side flanges 36 in contact with the ears 21 and the screws 39 extending through metallic socket pieces 40 and into the respective metal pieces 23 and 24 on the block 19', the contact members 14 and 15 will be automatically placed in circuit with the main circuit wires 27 and 28, while the casing 12 of the heat regulator will be placed in circuit with the ground wire 29. The advantages of my invention will be obvious. In use it will permit the securing of devices such as heat regulators to the wall by ordinary mechanics and at the same time that the heat regulator is secured to the wall the proper electric and circuit connection will be effected.

I claim:

1. temperature regulator comprising a metallic frame and sets of contact pointscar ried thereby and insulated therefrom, a

ducting members, said conducting members being so positioned that when the temperature regulator is secured to the wall by the securing means the frame and the respective contacting points will be severally put in electrical connection with said conducting members.

2. A temperature regulator comprising a -metallic frame and sets of contact points carried thereby and insulated therefrom, a;

thermostatic member for closing an electric circuit, said circuit including said frame and one or the other of said contact points, a securing block separable from the temperature regulator adapted to be fastened to a wall of the building, a set of electric 1 wires insulated one from ,the other, 'and means having electrical connection with such wires for securing the said temperature regulator to the said securing block and holding the same positioned thereby upon the wall, said means operating to put the frame and respective contact points in electrlcal connectlon with the respective wires of said system.

3. A temperature regulator comprising a metallic frame having side flanges, a pair of contact points carried thereby and insulated from the frame, a thermostatic mem her for closing an electric circuit, said circuitincluding said frame and one or the other of said contact points, a securing block ofnonconducting material separable from the tempcrature regulator adaptcdto be fastened to a wall of the building, a set of three electric wires insulated one from the other, and means having electrical connection with such wires including a metallic member on the block having engagement with said flanges for securing the said heat regulator .to the said securing block and holding the same positioned therebyupon the wall, said means operating to put the frame and respective contact points in electrical corlnection with the respective wires of said system.

. 4. A temperature regulator comprising a metallic frame having side flanges, a pair ,of contact points carried thereby and insu lated from theframe, a thermostatic mem' her for closing an electric circuit, said circuit including said frame and one or the other of said. contact points, a securing block of non-cpnducting material separable from the temperature regulator adapted to be fas with .one of said tened to a wall of the building, a metal bar having members thereon for engagement with said flanges, a set of electric wires insulated one from the other, one of said wires being connected with the metal bar, and

jmeans for simultaneously securing the heat regulator to the securing block and effecting electrical connection between the contact points and the other wires, respectively.

, 5. A temperature regulator comprising a metallic frame and a pair of contact points carried thereby and insulated therefrom, a thermostatic member for closing an electric circuit-,said circuit including said frame and Queer. the other of said contact points, asecur'ing'block of non-conducting material so arable from the temperature regulator 'a apted to be fastened to a wall of the building, said securing block having thereon a metal strip adapted to contact with the frame and two metal screw receiving pieces, three electric wires insulated from one another and having respective connection with said metal strip and pieces on the securing block, a pair of screw sockets formed in the frame and insulated therefrom, each of said screw sockets being in electrical connection contact points, and screws extending through said sockets for entering the screw pieces and simultaneously acting Copies of this patent may be obtained for five cents each, by addressing the to secure the temperature regulator to the block and put the respective contact points in electrical connection with the screw piece wires.

6. A temperature regulatorcomprising a metallic frame, a pair of contact points carried thereby and insulated from the frame,

a thermostatic member for closing an electric circuit, said circuit including said frame and one or the other of said contact points, a securing block separable from the temperature regulator and adapted to be fastened to the wall, said securing block comprising metallic and non-con ucting portions, the metallic portion being provided with members for engagement with the said metallic frame, a set of electric wires insulated one from the other, one of said wires being connected with the metallic portion of the block, and means for effecting electrical connection between the contact points and the other wires, respectively, when the heat regulator is secured to the' securing block. In testimony whereof I aflix my signature in presence of two witnesses.

WALTER B; DAHL. \Vitnesses:

H. A. BOWMAN, ROBERT W. MUIR.

Commissioner of Patents,

Washington, D. G. 

